Hi Wayne, there is no doubt in my mind that we are dealing with a faulty transformer that has a great electro magnetic field radiation.
I considered the trafo shielding sheet from Don Audio but have no experience with this type of shielding, have you tried it?
The VPI brick is too big and could not put back the top cover.
I considered the trafo shielding sheet from Don Audio but have no experience with this type of shielding, have you tried it?
The VPI brick is too big and could not put back the top cover.
Could it be an idea to measure the load of the transformer?
If something had happened in the amp that causes higher current draw from transformer then the radiation from the transformer will also be higher.
If something had happened in the amp that causes higher current draw from transformer then the radiation from the transformer will also be higher.
Trying to track since I like to make separate PSes for signal and lower level circuits, when you say make the umbilical DC, move the rectifiers to the separate box as well?
HI 6L6, sent you mail, could you please send me the photos of the external power supply please?
How many secondaries has the power transformer?
How many secondaries has the power transformer?
No. The shielding sheet has sharp edges and is wrapped with an isolated tape. There is no need to ground it.
If I understand correctly you keep the isolation tape and wrappe it without grounding.
Do you put tape to block it?
Do you put tape to block it?
Correct. I wrapped it around the toroid with overlapping to input and Cinemags.
My build is very tight, so the shield fitted exact without any extra blocking.
But you can fix it with adhesive tape anyway.
My build is very tight, so the shield fitted exact without any extra blocking.
But you can fix it with adhesive tape anyway.
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Thank you, as soon as the shield is fitted I will give feedback
Hi all,
finally solved the hum problem with my XP-17!
in particular I would like to thank ACnotDC for giving me the great advice of trying the Shielding Sheet from Don Audio.
I wrapped the shield oround the toroidal transformer and now my XP-17 is dead quiet.
Thank you ACnotDC!
I would like to thank even 6L6 for all the support he gave me.
From Pass Labs no response to my mail.
I have sent them a mail from their website, maybe something went wrong and they didn't recieve it.
finally solved the hum problem with my XP-17!
in particular I would like to thank ACnotDC for giving me the great advice of trying the Shielding Sheet from Don Audio.
I wrapped the shield oround the toroidal transformer and now my XP-17 is dead quiet.
Thank you ACnotDC!
I would like to thank even 6L6 for all the support he gave me.
From Pass Labs no response to my mail.
I have sent them a mail from their website, maybe something went wrong and they didn't recieve it.
Oh! I didn't know!
Thank you Zen Mod.
An additional shield is what I did.
As I like this phono very very much, the best I have tried till now, way better than the AR SP8 and SP10, Nagra bps, Naim phono and so on.
Maybe getting a new transformer could get things and spound even better.
Any advice?
Thank you Zen Mod.
An additional shield is what I did.
As I like this phono very very much, the best I have tried till now, way better than the AR SP8 and SP10, Nagra bps, Naim phono and so on.
Maybe getting a new transformer could get things and spound even better.
Any advice?
